| Sun Prairie to Arcos de Valdevez | 3,944.99 mi (6,348.85 km) |
| Sun Prairie to Arcozelo | 3,963.50 mi (6,378.63 km) |
| Sun Prairie to Arganil | 4,020.00 mi (6,469.57 km) |
| Sun Prairie to Arouca | 3,985.44 mi (6,413.95 km) |
| Sun Prairie to Arruda dos Vinhos | 4,019.73 mi (6,469.13 km) |
| Sun Prairie to Aveiro | 3,978.24 mi (6,402.36 km) |
| Sun Prairie to Aver-o-Mar | 3,945.27 mi (6,349.30 km) |
| Sun Prairie to Aves | 3,964.77 mi (6,380.68 km) |
| Sun Prairie to Azambuja | 4,025.73 mi (6,478.78 km) |
| Sun Prairie to Baiao | 3,986.42 mi (6,415.53 km) |
| Sun Prairie to Barcelos | 3,948.00 mi (6,353.69 km) |
| Sun Prairie to Barreiro | 4,031.43 mi (6,487.96 km) |
| Sun Prairie to Batalha | 4,007.29 mi (6,449.11 km) |
| Sun Prairie to Beja | 4,109.04 mi (6,612.86 km) |
| Sun Prairie to Belas | 4,018.08 mi (6,466.48 km) |
